Title :
The theoretical performance of ATSC spectrum sensing
Author :
Shellhammer, Stephen J.
Author_Institution :
Qualcomm, Inc., San Diego, CA, USA
Abstract :
A overview of ATSC spectrum sensing based on detection of the pilot signal is provided. Then the theoretical performance for such a spectrum sensor is given. The formula for the probability of mis-detection (one minus the probability of detection) is derived for several different channels. The channel models that are consider are: additive white Gaussian noise, a Rayleigh fading channel with long coherence time and a multiple receive antenna Rayleigh fading channel with long coherence time and finally a Rayleigh fading channel with short coherence time. The formula for the probability of false alarm is also derived. Based on the formulas for probability of mis-detection and probability of false alarm observations are made about how changes in various design parameters impact the sensing performance. Finally, and example is given using typical parameter values.
Keywords :
AWGN channels; Rayleigh channels; antenna arrays; receiving antennas; signal detection; television receivers; ATSC spectrum sensing; Rayleigh fading channel; additive white Gaussian noise channel; channel models; coherence time; false alarm observations; multiple receive antenna; pilot signal detection; spectrum sensor; Detectors; Discrete Fourier transforms; Random variables; Signal to noise ratio; Synchronization;
Conference_Titel :
New Frontiers in Dynamic Spectrum Access Networks (DySPAN), 2011 IEEE Symposium on
Conference_Location :
Aachen
Print_ISBN :
978-1-4577-0177-1
Electronic_ISBN :
978-1-4577-0176-4
DOI :
10.1109/DYSPAN.2011.5936242
